Okay, I see why you are here; you want your character to feel alive but are not that good at animating... Perfect!
The "Wobble" is a commonly used mechanic where instead of the object being animated, it sort of rotates left and right. Like Wobbling.
I've made this example so You don't have to animate that 900 frame walk-cycle!
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Platformer: A,D to move left and right, S to jump.
Top-down: A,S,D,W to move in any direction.